3M 740 Operating Instructions Manual
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3M 740 Operating Instructions Manual

Wrist strap + shoe tester
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3
740 Wrist strap + shoe tester
MO 0765-0601
Operating Instructions
April, 2001
3
740
wrist strap + shoe tester
<
>
o.k.
1
2
MO 0765-0601
1 / 11

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Summary of Contents for 3M 740

  • Page 1 740 Wrist strap + shoe tester MO 0765-0601 Operating Instructions April, 2001 wrist strap + shoe tester < > o.k. MO 0765-0601 1 / 11...

  • Page 2: Declaration Of Conformity

    I. General II. Declaration of Conformity Personnel grounding devices such as wrist straps The 740 Wrist Strap and Shoe Tester is in and conductive footwear are the primary method conformity with the regulations of the EMC- to minimize charge generation on the human directive 89/336/EWG.

  • Page 3: Operation

    III. Description IV. Operation The 740 wrist strap and shoe tester is an electronic Connect the AC/DC transformer (DC 24-30 V, test instrument which is easy to operate and 150 mA) to the 740 tester. designed to be wall mounted. An AC/DC Note: If you notice a delay in the response time of transformer is supplied.

  • Page 4: Wall Mounting

    3M Dual Lock™ fastening strips to the rear of the MΩ. If a red "<" LED is illuminated, the current 740 tester to the bottom and top in parallel; see limiting resistor in the ground cord is bypassed drawing for locations.
  • Page 5 The shoe test does not influence the wrist strap test, therefore the shoes can be tested while the wrist strap is still connected to the 740 or the wrist strap can be tested while the operator is standing on the 741 shoe electrode. Both metal plates should not be pressed at the same time.
  • Page 6 (Example 1) and authorization control equipment such as electrical door opening systems (Example 2). The output of the 740 will give you permanently +5 V at pin 3 and DC-return at pin 6. The remaining pins 1, 2, 4 and 5 (open collector) will be high (max. +30 V / 20 mA have to be provided externally) or low (DC-return) while pressing on the contact plates either for wrist strap or shoe tests.

  • Page 7: Specifications

    Data output connector pin status when testing wrist strap/shoe t l u t l u t l u t l u t s i t s i t s i t s i . k . . k . . k . .

  • Page 8: Verification Procedure

    Connect the reference resistor to the 740 as shown *This example is used above in the Figure 1. Switch the 740 unit on. Select the 2 MΩ range and use the reference resistors as indicated in the test table and press contact plate A.
  • Page 9 Verification of shoe test circuit: Connect the reference resistor to the 740 as shown in Figure 2. Select the 10 MΩ range using the reference resistors indicated in the test table and press contact plate B. wrist strap + shoe tester <...
  • Page 10 3M 740 Wrist Strap + Shoe Tester Logbook 1 2 3 4 5 6 7 8 9 W S W S W S W S W S W S W S W S W S W S W S W S W S W S W S W S W S W S W S W S W S W S W S W S W S W S W S W S W S W S W S...
  • Page 11 BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. If this product is defective within the warranty period stated above, your exclusive remedy shall be, at 3M's option, to replace or repair the 3M product or refund the purchase price of the 3M product. Except where prohibited by law, 3M will not be liable for any loss or damage arising from this 3M product, whether direct, indirect, special, incidental or consequential regardless of the legal theory asserted.
  • Page 12 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information:...

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